The SimpleViewer embed code looks fine and adding wmode should not kill it... you do have some HTML errors in the page and it looks like you have not uploaded the menu bar assets.

hozstrip.png Failed to load resource: the server responded with a status of 404 (Not Found)SpryMenuBarRight.gif Failed to load resource: the server responded with a status of 404 (Not Found)SpryMenuBarDown.gif Failed to load resource: the server responded with a status of 404 (Not Found)indexabstract.html Uncaught SyntaxError: Unexpected end of inputSpryMenuBarRightHover.gif Failed to load resource: the server responded with a status of 404 (Not Found)SpryMenuBarDownHover.gif Failed to load resource: the server responded with a status of 404 (Not Found)